/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: jzj
 * Date: 2024-02-20
 * Time: 16:15
 */

import com.mysql.jdbc.jdbc2.optional.MysqlDataSource;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Scanner;

public class test1 {
    public static void main(String[] args) throws SQLException {
        // 假定数据库中有一个 student 表 (id, name), 往里面插入一个数据.
        // 让用户通过控制台来输入学号和姓名.
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入学号: ");
        int id = scanner.nextInt();
        System.out.println("请输入姓名: ");
        String name = scanner.next();

        // 1. 创建 "数据源"
        DataSource dataSource = new MysqlDataSource();
        ((MysqlDataSource) dataSource).setUrl("jdbc:mysql://127.0.0.1:3306/tmpdata?characterEncoding=utf8&useSSL=false");
        ((MysqlDataSource) dataSource).setUser("root");
        ((MysqlDataSource) dataSource).setPassword("12345");

        // 2. 和数据库服务器建立连接~~
        Connection connection = dataSource.getConnection();

        // 3. 构造 SQL 语句~
        String sql = "insert into student values(?, ?)";
        PreparedStatement statement = connection.prepareStatement(sql);
        statement.setInt(1, id);
        statement.setString(2, name);

        // 4. 执行 SQL 语句~. 返回值就是 "这次操作影响到几行"
        int n = statement.executeUpdate();
        System.out.println("n = " + n);

        // 5. 释放必要的资源. 关闭连接.
        statement.close();
        connection.close();
    }
}
